Friction draft-rigging.



W. A. BERGER. FEIGTION DRAFT RIGGING.

APPLIOATION FILED PEB. 1, 1911.

f Patented Apr. 1,1913.

2 SHEETS-SHEET l.

W. A. BERGER.

FBIGTION DRAFT RIGGING.A

l APPLICATION PILED'FBB.1, 1911'.

` Patented Apr. 1, 1913.V

nnrrnnsrrtrns ier oristicii WILLIAM A. BERGER, OF CHICAGO, ILLINOXS, ASSIGNGR T0 WILLIAM H. MINER, OF

- CHICAG; LLXNOS.-

rnro'rron liners-morfine.

Specification of Letters Yatent.

intein-,eti npr. i, i ois,

Applicationiled February 1, 1911. Serialio. 606,037.

To all ftcwm, e' if `)1mg/con com it known that l, TWILLIAM A. BERGER,

:i citizen of the United States, residing in Chicago, in the county of Cook and State ot' llinoisheve invented a. new'nnd -useul two sets ot friction shoe'swone set at each il of the friction shell ind two Wedges, one each set of 'friction shoes endtwo tondein. arranged springs interposed between the two sctsjot friction shoes, and e. connectrod attending between the Wedges to hold :all the parts in assembled and operative relation with each otherz l intention also consists in the novel^ con, novel combinations of parts and devices here in shown? ondfdescribed and `more particularly specified in the claims. f l

in the accompanying drawing forming;` n ot thisffspecicetion, Figure l is l plan View, partly in horizontal section, on line i4-l ot' Fig.l @of a. friction draft rigging embodying roy-invention. :Fig: 2 is a side "eletetion, portlyin horizontal section on -line of Figsi. TEig. 3 is a cross section on 3MB oit Fig. 1. Fig. fr is :t detail sectionI l 'ot the friction shell and cont-dined ports, sliorfn the springs expanded. Fig. 5 is n y similnr view, showing the, springs comcrest-ect Figs. G

on'lioesf-G and L -f7 of '-l. c 8

is o ,det-sil section Online 8#8 of Fig. 5 and Figi 9 is en end elevation looking` 1from line 11,5"9--9 ,of v

ln the drhwing, t, l represent the center, sills or other draft' members .of a railway cor, 2 the stop members secured thereto, hav: ing front and rearstops orshoulders 3, 4 tor'the followers to alb'nt against, sind limitying stops or shoulders 5,6 to limit the corn-l pressivc movement of the draw-bnr and fol-l lowers. 7 is th dra-Wfbar, 8 the draft yoke,

9,10 the tollowersfall these partsbeing of tron of partsnnd devices and inthe ber and? are detail sectionsany ordinary, customary or suitable ronstruction.

ll is-my double acting friction shell or ucylinder, the sume having an internal friction face 12 at each end' t-l'iereof. The friction shell llis also provided With'zin internal annular flange or shoulder 18 nt its middle. for the two tandem arrangedsprings ll, 15 to abut against at their adjacent ends. The smaller' springs 16, 17 fit within the large or main` springs 14, lo, :ind abut at their adj scent ends against zi thimhle or sent member i8 which is Ainteriliosed between these springs 1617. l

lnsic the iiiction shell l provide two vsets of friction slides 19;, 20, one at each end or", tl'i'e friction shell, :1nd each preferably consistingt iree Jrietion shoes 21, each ot which has on external Jtrie-tion tace and :in inclined or Wedge foce 23 and :i shoulder'- lilach of the friction shoes 2l also has en internal flange or shoulder for the end ottliesmaller or supplemental spring' to ibutegoinst. Each 'set of trictimi shoes is outwardly spread against the friction shell ,by zt wedge 2G, anti-friction rollers "2T being interposed between euch ot' the inclined or Wedge faces 28 of the wedge and the corresponding friction shoe.

The two sets of li'iriction shoes, the two Wedges :1nd the tandem arranged main und supplemental springs are all connected together and held and assembled in operative relation with each other by :i connecting; rod 29 having a head 30 at oney end which tits in a recess 3l of one Wedge and a threaded nut 32 W'hicl'i tits in the corresponding recess 31 ot the other wedge, the connectingf rod extending through the thimble or seat menill which is rposed between the ,aller suppl tellsprings i6, t?. he l .ver limb of the d; yolte rests upon thc tie plete 33A which is reinoi'nbly secured by bolts 392 to the center sills or draft n-einbersl, Lt. 1

in! operation, till the tandem arranged springsare compressed and both sets of friotion shoes forced inward'towerd the middle of ,the shell in cushioning both pulling andbutting movements of the drow-bar. And in releasing, each of the springs reacts at vone end against thefriction shoes to restore'the some to position; All the springs and both sets' ot' friction shoes thus coperete in both ics pulling and buffing and in both cushioning and releasing.

Ifclaim:-

1. In a friction draft rigfring, the combination with a draw-bar, di'aft yoke, stop" members and followers, 0f a. double acting friction shell having an internal' friction face at each lend thereof, two sets of friction shoes, g'onje set at each end of said friction` shell, two wedges, one for each set of fric- 'tion shoes, and springs interposed between the two sets of friction shoes, saidfriction shell 'having an internal shoulder at .the middle for the' adjacent ends ofthe springs to abut against, substantially as specified.

2. In a friction' draftrigging, the combination 'with a drawbar, draft yoke, stop members and followers, of a double acting friction shell having an internal friction face at each end thereof, two sets of friction shoes, one set at each end of said' friction shell, two wedges, one for each set of friction shoes, springs interposed between the two sets of friction shoes, said friction shell having an internal shoulder at the middle for the adjacent ends ofthe springs to abut against, and a pair of tandem arranged smaller springs within said first mentioned Springs and a seat member interposed between the adjacent ends of said smaller springs7 substantially as specified.

XVILLIAM A. BERGER.

vWitnesses: i y

' ALENE Grumman, KEiTH M. JEFFREY.

' v E Y Copies of this patent may be obtained for ive cents each, by addressing the Commissioner 'of Patents,

Washington, D. 0; 

